2 channel in wall stereo amplifier

{"cid":"91149500","title":"Stereo Wall Listening Device For Secret Spy On \/ Observation With Two Channels","imgUrl":"https:\/\/img.chinax.com\/nimg\/51\/4e\/c0148dd73496a67495ca17dd82f3-200x200-1.jpg","attrs":{"Price":"USD\/Set FOB shenzhen","Brand Name":"HEWEI","Model Number":"HWCW-IV","Minimum Order Quantity":"1 set","Delivery Time":"20 working days","Certification":"YES","Place of Origin":"CHINA","Payment Terms":"T\/T","Supply Ability":"10 sets per month","Packaging Details":"carton case","Gross Weight":"956g","Main Control Unit Size":"131\u00d7125\u00d742mm; 41\u00d718\u00d715mm","Battery Using Time":"4-5h","Audio input":"Left and right double track","Audio output":"Left and right output simultaneously, or left and right output separately","Audio adjust":"Gain adjustment, low frequency, high frequency filter adjustment"}}